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SAMPLE INFO : 94SJP66
Sample ID:94SJP66
Station ID:94SJP66
Latitude:62.41629208
Longitude:-143.158523
Datum:NAD83
Date Sampled:1994-00-00
Sample Type 1:Lava
Field Lithology:Andesite
Text Description:
Outcrop of rubbly plates and blocks at Gutbuster. Fine grained, vesicular, holocrystalline, seriate to glomeroporphyritic with a matrix of mesostasis, opaque, plagioclase and orthopyroxene?. Cognate inclusions of plagioclase (An41, An55), orthopyroxene with clinopyroxene rims, opaque and clinopyroxene are present. Plagioclase phenocrysts (An38 - An58) are up to 2.0 mm and some have sieve textured zones; there are resorbed grains with overgrowth rims; oscillatory zoning is common and normal zoning is common in smaller grains. Olivine phenocrysts are up to 1.25 mm and occasionally are rimmed with small orthopyroxene crystals. Orthopyroxene phenocrysts are up to 2.2 mm and clinopyroxene rims are common. Clinopyroxene phenocrysts are up to 1.25 mm. Opaque phenocrysts are up to 0.1 mm. 76.6% matrix, 16.3% plagioclase, 2.1% olivine, 1.5% clinopyroxene, 3.0% orthopyroxene, 0.5% vesicles.

References:
Geochemical variation in the less than 5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex

GEOCHEM DATA
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDSample Type 1Sample Type 2Final UnitMaterialSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-majorsREF majorsMETH majorsFe2O3/Fe203T origFeO/FeOT origVolatiles csvMETH volatilesCsRbBaSrLaCePrNdSmEuGdTbDyHoErTmYbLuYZrNbHfTaPbThUScVCrFeCoNiCuZnGaMoAsNaKRef trace1METH trace1RbBaSrLaCeNdSmEuGdDyErYbLuYZrNbPbThUScTiVCrNiCuZnGaRef trace2METH trace2Light csvHalogen csvother major csvother lile csvother ree csvother hfse csvother hpe csvother tm csvother misc csv
94SJP6662.41629208-143.158523Preece, S. J.1994-00-00 Skookum CreekNabesna B-5; T7N, 12E, S3Outcrop of rubbly plates and blocks at Gutbuster. Fine grained, vesicular, holocrystalline, seriate to glomeroporphyritic with a matrix of mesostasis, opaque, plagioclase and orthopyroxene?. Cognate inclusions of plagioclase (An41, An55), orthopyroxene with clinopyroxene rims, opaque and clinopyroxene are present. Plagioclase phenocrysts (An38 - An58) are up to 2.0 mm and some have sieve textured zones; there are resorbed grains with overgrowth rims; oscillatory zoning is common and normal zoning is common in smaller grains. Olivine phenocrysts are up to 1.25 mm and occasionally are rimmed with small orthopyroxene crystals. Orthopyroxene phenocrysts are up to 2.2 mm and clinopyroxene rims are common. Clinopyroxene phenocrysts are up to 1.25 mm. Opaque phenocrysts are up to 0.1 mm. 76.6% matrix, 16.3% plagioclase, 2.1% olivine, 1.5% clinopyroxene, 3.0% orthopyroxene, 0.5% vesicles.94SJP66LavaWhole-rock 58.4 0.86 18.12 5.94 0.11 4.16 7.02 3.95 1.32 0.19 99.6655DCP6.545.94LOI=-0.08DCP 21.3 446 590 16 110 3.5 1.3 2.3 17.9 158 52 55 53 62 18.5 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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